Ionospheric Effects of the X-Ray Flares of September 24, 2011 According to Oblique Sounding Data

We present the results of observations of a sudden wideband attenuation of short radio waves and Doppler-shift variations of the signals from broadcast stations on oblique sounding paths in the Eurasian longitudinal sector during a series of X-ray flares that occurred on September 24, 2011. The resu...

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Veröffentlicht in:	Radiophysics and quantum electronics 2014-10, Vol.57 (5), p.326-335
Hauptverfasser:	G.Vertogradov, G., G.Vertogradova, E., Uryadov, V.P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Astronomy Astrophysics and Astroparticles Atmosphere, Upper Attenuation Flares Hadrons Heavy Ions Ionosphere Lasers Mathematical and Computational Physics Nuclear Physics Observations and Techniques Optical Devices Optics Photonics Physics Physics and Astronomy Quantum electronics Quantum Optics Short wave Sounding Stations Theoretical Wideband X-rays
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Beschreibung
Zusammenfassung:	We present the results of observations of a sudden wideband attenuation of short radio waves and Doppler-shift variations of the signals from broadcast stations on oblique sounding paths in the Eurasian longitudinal sector during a series of X-ray flares that occurred on September 24, 2011. The results of modeling of the electron-density profiles in the lower ionosphere based on measurements of attenuation of short waves on the Moscow—Rostov-on-Don path at a frequency of 9996 kHz of the standard-time RWM station during the most powerful flare that occurred on September 24, 2011 at 09:40 UT are given.
ISSN:	0033-8443 1573-9120
DOI:	10.1007/s11141-014-9516-7